Attachment clamp for beams



Dec. 13, 1927.

H. E. BARB ER ATTACHMENT CLAMP FOR BEAMS Filed Aug. 8,. 1922 2Sheets-Sheet l java? H 5. HMAM Dec. 13, 1927. 1,652,695

1 H. E. BARBER ATTACHMENT CLAMP FOR BEAMS Filed Auz. 1922 2 Sheets-Sheet2 fivfi r H I L K1 MAM,

Patented Dec. 13, 1927.

UNITED STATES HARRY E. BARBER, 0F BOSTON, MASSACHUSETTS.

I ATTACHMENT CLAMP FOR BEAMS.

My-invention relates to attachment clamps for Ibeams and the like and ithas for its oibject to provide an improved device of this c ass.

In the case of buildings constructed with steel frames, or at least withfloors or roofs supported by I-beams, it is frequently necessary tofasten different things to such beams so that/they will be supported bythe latter. For example, when installing concrete floors and the like itis usually the practice to attach the molding forms to the horizontalIbeams of the building frame; when installing shafting it is oftendesirable and sometimes necessary to attach the shaft hangers to saidbeams, and also when in stalling steam, water or sprinkler pipe lines itis often desirable, and sometimes necessary, to attach the pipe hangersto said beams. My invention aims to provide an attachment clamp forapplication to I-beams and the like which, in its best form, may be usedfor several different purposes includ ing those just referred to. Tothis end I have provided an attachment clamp comprising a onepiece jawmember made with a horizontal groove or socket for engaging the flangeof an I-beam or the like, and two bolt holes that are relatively oft-setand also offset with relation to said socket, one of said holes beingdisposed horizontally and the other vertically. To fasten the jaw memberin position against the flange of the I-beam a clamping bolt is providedthat occupies the horizontal bolt hole and engages the side of the beamopposite to that to which the jaw member is applied.

In the accompanying drawings,

Figure 1 shows in cross-section a portion of an Ibeam having appliedthereto an attachment clamp constructed in accordance with my invention.

Figure 2 is a perspective view of the jaw member of the clamp shown inFig, 1.

Figure 3 is a top plan view of the jaw member.

Figures 4 and 5 are side elevations of the jaw member.

Figure 6 illustrates another invention.

My new attachment clamp for beams as illustrated in Figs. 1 to 5,inclusive, com prises a one-piece jaw member A and a clamping bolt B.The jaw member A is preferably a block of malleable cast iron that ismade with a horizontal transverse V- form of my Application filed August18, 1922.

' Serial No. 582,616.

shaped socket 1 adapted to receive within it the edge portion of theflange 2 of an I-beam 3 as shown in Fig. 1. Below socketlj the jawmember A is made with a horizontal bolt hole 4 to receive the shank ofthe attaching bolt B. Relatively off-set with respect to the horizontalflange socket 1 and the horizontal bolt hole 4, also,

D is a vertical bolt hole 5 to receivethe bolt or other device by whichthe hanger, or other thing that is tobe supported by the hanger, isconnected with-the latter. Thus a distinguishing feature of my newattachment clamp is the peculiarconstruction of the jaw member A whichis characterized by the provision of two bolt holes 4 and 5 disposed atrightv angles. or substantially right angles, to each other and at rightangles to the horizontal flange socket 1, this peculiar constructiongiving to the device a range of utility greater than devices of thisclass as heretofore constructed.

When my attachment clamp is employed as means for connecting to beam 3 apipe hanger or other single and permanent supporting device such as thehook C shown in Fig. 1, the bolt B is preferably shaped with a hook 6that is engaged with the flange 7 at the opposite side of the beam fromthat to which the jaw member is applied, and by tightening up upon thenut 8 of bolt the attachment is securely and immovably clamped to thebeam. The straight threaded shank of hook C is passed upwardly throughbolt hole 5 and has applied to its upper end a nut 9 by which it is heldin place.

By applying to the beam a pair of attachment clamps constructed as abovedescribed with their jaw members A at opposite sides of beam 3, a shafthanger of ordinary construction may be securely fastened to the beam bymeans of ordinary straight bolts placed in the vertical bolt holes 5 ofthe two jaw members. It will also be clear that by applying a pluralityof my attachment clamps to the floor beams of a build ing the moldingform for concrete flooring may be securely and detachably fastened inposition by means of ordinary bolts occupying the vertical bolt holes 5of the jaw members A. In such cases the bolts used in holes 5 wouldpreferably be provided with removable nuts at both ends' so that byremoving the lower nuts after the concrete has set the molding form canbe removed after which said bolts can be removed by unscrewing the samefrom their uppernuts which the beam. Bolts 15, each having nuts 16 atremaln'embedded Within the concrete. Since the opposite ends thereof,are arranged Withthe attachment clamps are located Within in thevertical holes 0 and serve to support the molding'form they are, ofcourse, enia key block 17 onwhich floor board 11 rests bedded andhidden. Within the concrete exandhy whicl'rthe floor boards 21116512,cept that the lower ends of the holes 5 are strips18 andspanners 19 arealso supported.

, flush With the bottom of the concrete and After the concrete Withinthe mold has set open for the reception of bolts by means of it is, ofcourse.v necessary to remove the WhlCh varloussort-s oihangers may besemoldlng form and this may be done by recuredto the attachment clamps.moving the outside nuts; 1 The bolts '15 may In Fig. 6 I haveillustrated an attachment then be removed by unscrewing them from clampcomprising two jaw'rnembers A, A theirv upper nuts which are permanentlyem- 4 which are applied to opposite sides of the bedded within theconcrete and remain in beam 3 asshown. and heldin place by aposition'to'be used again should it later be single boltlC provided withnuts 81. Stat desired to connect a pipe or shaft hanger to theopp osit-eends thereof, said'bolt C occuthe attachmentclamp. After removing thepying the horizontalholes lbtthe two jaw molding form a shorter'bolt Cmay be submembers. 111 this gfigure I have shown the stituted for theoriginal bolt if desired. parts of a molding form for concrete sup- WhatI claim is:

ported by theattachment clan1p,- the bottom As anew article ofmanufacture-a onealls of said form being indicated 10. pieced metalcasting madewvith two bolt 1-1 and 12, and two of the side walls-thereofholes and an open groove,,each laterally oliat 13 and 14. Thetw'o sideWalls 13 -and 1 1 set and approximately at right angleswith are formedwith apertures through which relation to the other two and beingdisposedthea-ttaching bolt C? extendsgthe nuts 81 alongside of and close-to saidother two.

beingioutside-said walls andserving to-clamp In testimony whereofI-hanejafiixed my the latter against the members A and signature. a,said membersagainst the opposite flangesof V HARRY E. BAR-BER.

